docs: def delete_file(self, path, prefixed_path, source_storage):
          """
          Override delete_file to skip modified time and exists lookups.
          """
          if not self.collectfast_enabled:
              return super(Command, self).delete_file(
                  path, prefixed_path, source_storage)
          if not self.dry_run:
              self.log("Deleting '%s'" % path)
              self.storage.delete(prefixed_path)
          else:
              self.log("Pretending to delete '%s'" % path)
          return True